./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:14:52,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:14:52,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:14:52,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:14:52,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:14:52,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:14:52,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:14:53,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:14:53,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:14:53,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:14:53,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:14:53,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:14:53,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:14:53,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:14:53,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:14:53,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:14:53,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:14:53,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:14:53,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:14:53,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:14:53,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:14:53,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:14:53,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:14:53,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:14:53,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:14:53,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:14:53,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:14:53,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:14:53,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:14:53,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:14:53,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:14:53,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:14:53,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:14:53,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:14:53,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:14:53,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:14:53,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:14:53,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:14:53,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:14:53,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:14:53,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:14:53,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:14:53,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:14:53,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:14:53,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:14:53,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:14:53,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:14:53,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:14:53,092 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:14:53,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:14:53,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:14:53,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:14:53,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:14:53,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:14:53,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:14:53,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:14:53,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:14:53,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:14:53,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:14:53,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:14:53,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:14:53,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:14:53,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:14:53,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:14:53,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:14:53,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:14:53,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:14:53,096 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:14:53,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:14:53,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:14:53,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:14:53,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-06 10:14:53,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:14:53,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:14:53,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:14:53,381 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:14:53,381 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:14:53,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-06 10:14:53,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79e8c544/42123b8ae3f240e48cfdf9722a8b78f0/FLAG0157d64e9 [2021-11-06 10:14:54,143 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:14:54,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-06 10:14:54,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79e8c544/42123b8ae3f240e48cfdf9722a8b78f0/FLAG0157d64e9 [2021-11-06 10:14:54,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79e8c544/42123b8ae3f240e48cfdf9722a8b78f0 [2021-11-06 10:14:54,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:14:54,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:14:54,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:14:54,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:14:54,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:14:54,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:54" (1/1) ... [2021-11-06 10:14:54,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2081c0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:54, skipping insertion in model container [2021-11-06 10:14:54,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:54" (1/1) ... [2021-11-06 10:14:54,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:14:54,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:14:54,814 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-06 10:14:54,820 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-06 10:14:54,840 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:14:54,848 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:14:55,456 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,466 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,468 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,478 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,478 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,479 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,741 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:14:55,742 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:14:55,743 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:14:55,744 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:14:55,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:14:55,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:14:55,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:14:55,746 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:14:55,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:14:55,747 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:14:55,864 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:14:55,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:55,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:14:56,108 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:14:56,124 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-06 10:14:56,125 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-06 10:14:56,126 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:14:56,127 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:14:56,159 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,159 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,166 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,166 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,210 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:14:56,211 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:14:56,212 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:14:56,215 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:14:56,217 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:14:56,217 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:14:56,218 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:14:56,218 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:14:56,218 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:14:56,225 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:14:56,248 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:14:56,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:14:56,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:14:56,585 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:14:56,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56 WrapperNode [2021-11-06 10:14:56,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:14:56,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:14:56,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:14:56,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:14:56,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:14:56,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:14:56,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:14:56,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:14:56,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:14:56,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:14:56,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:14:56,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:14:56,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (1/1) ... [2021-11-06 10:14:56,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:14:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:14:56,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 10:14:56,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 10:14:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:14:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:14:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:14:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:14:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:14:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:14:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:14:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:14:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:14:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:14:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:15:06,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:15:06,527 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-11-06 10:15:06,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:06 BoogieIcfgContainer [2021-11-06 10:15:06,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:15:06,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:15:06,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:15:06,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:15:06,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:54" (1/3) ... [2021-11-06 10:15:06,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ff33bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:06, skipping insertion in model container [2021-11-06 10:15:06,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:56" (2/3) ... [2021-11-06 10:15:06,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ff33bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:06, skipping insertion in model container [2021-11-06 10:15:06,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:06" (3/3) ... [2021-11-06 10:15:06,536 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-06 10:15:06,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:15:06,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-06 10:15:06,579 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:15:06,584 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 10:15:06,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-06 10:15:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 10:15:06,609 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:06,609 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:06,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:06,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1026196011, now seen corresponding path program 1 times [2021-11-06 10:15:06,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:06,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150422184] [2021-11-06 10:15:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:06,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:07,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:07,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150422184] [2021-11-06 10:15:07,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150422184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:07,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:07,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:15:07,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166552105] [2021-11-06 10:15:07,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:15:07,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:15:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:15:07,332 INFO L87 Difference]: Start difference. First operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:07,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:07,373 INFO L93 Difference]: Finished difference Result 516 states and 711 transitions. [2021-11-06 10:15:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:15:07,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 10:15:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:07,387 INFO L225 Difference]: With dead ends: 516 [2021-11-06 10:15:07,387 INFO L226 Difference]: Without dead ends: 255 [2021-11-06 10:15:07,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:15:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-06 10:15:07,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-06 10:15:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3529411764705883) internal successors, (322), 254 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 322 transitions. [2021-11-06 10:15:07,455 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 322 transitions. Word has length 43 [2021-11-06 10:15:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:07,455 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 322 transitions. [2021-11-06 10:15:07,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 322 transitions. [2021-11-06 10:15:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 10:15:07,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:07,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:07,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:15:07,462 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1821286743, now seen corresponding path program 1 times [2021-11-06 10:15:07,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:07,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582976355] [2021-11-06 10:15:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:07,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:07,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:07,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582976355] [2021-11-06 10:15:07,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582976355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:07,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:07,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:15:07,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265304060] [2021-11-06 10:15:07,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:15:07,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:15:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:07,833 INFO L87 Difference]: Start difference. First operand 255 states and 322 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:08,026 INFO L93 Difference]: Finished difference Result 484 states and 610 transitions. [2021-11-06 10:15:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:15:08,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 10:15:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:08,033 INFO L225 Difference]: With dead ends: 484 [2021-11-06 10:15:08,033 INFO L226 Difference]: Without dead ends: 255 [2021-11-06 10:15:08,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-06 10:15:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-06 10:15:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3403361344537814) internal successors, (319), 254 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 319 transitions. [2021-11-06 10:15:08,052 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 319 transitions. Word has length 43 [2021-11-06 10:15:08,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:08,053 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 319 transitions. [2021-11-06 10:15:08,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 319 transitions. [2021-11-06 10:15:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 10:15:08,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:08,056 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:08,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:15:08,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash 704440679, now seen corresponding path program 1 times [2021-11-06 10:15:08,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:08,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743964786] [2021-11-06 10:15:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:08,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:08,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:08,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743964786] [2021-11-06 10:15:08,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743964786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:08,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:08,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:15:08,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669872175] [2021-11-06 10:15:08,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:15:08,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:15:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:08,407 INFO L87 Difference]: Start difference. First operand 255 states and 319 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:08,817 INFO L93 Difference]: Finished difference Result 535 states and 676 transitions. [2021-11-06 10:15:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:15:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-06 10:15:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:08,820 INFO L225 Difference]: With dead ends: 535 [2021-11-06 10:15:08,820 INFO L226 Difference]: Without dead ends: 305 [2021-11-06 10:15:08,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:15:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-06 10:15:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 265. [2021-11-06 10:15:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3266129032258065) internal successors, (329), 264 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 329 transitions. [2021-11-06 10:15:08,849 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 329 transitions. Word has length 55 [2021-11-06 10:15:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:08,850 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 329 transitions. [2021-11-06 10:15:08,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2021-11-06 10:15:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 10:15:08,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:08,853 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:08,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:15:08,854 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:08,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2076247977, now seen corresponding path program 1 times [2021-11-06 10:15:08,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:08,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699573016] [2021-11-06 10:15:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:08,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:09,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:09,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699573016] [2021-11-06 10:15:09,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699573016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:09,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:09,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:15:09,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324841206] [2021-11-06 10:15:09,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:15:09,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:15:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:09,172 INFO L87 Difference]: Start difference. First operand 265 states and 329 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:09,324 INFO L93 Difference]: Finished difference Result 479 states and 594 transitions. [2021-11-06 10:15:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:15:09,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-06 10:15:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:09,326 INFO L225 Difference]: With dead ends: 479 [2021-11-06 10:15:09,327 INFO L226 Difference]: Without dead ends: 265 [2021-11-06 10:15:09,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-06 10:15:09,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-06 10:15:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3185483870967742) internal successors, (327), 264 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 327 transitions. [2021-11-06 10:15:09,333 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 327 transitions. Word has length 55 [2021-11-06 10:15:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:09,333 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 327 transitions. [2021-11-06 10:15:09,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 327 transitions. [2021-11-06 10:15:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 10:15:09,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:09,335 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:09,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:15:09,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash 496870244, now seen corresponding path program 1 times [2021-11-06 10:15:09,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:09,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859178181] [2021-11-06 10:15:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:09,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:09,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:09,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859178181] [2021-11-06 10:15:09,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859178181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:09,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:09,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:15:09,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608796042] [2021-11-06 10:15:09,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:15:09,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:15:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:15:09,804 INFO L87 Difference]: Start difference. First operand 265 states and 327 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:10,167 INFO L93 Difference]: Finished difference Result 447 states and 548 transitions. [2021-11-06 10:15:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:15:10,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-06 10:15:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:10,169 INFO L225 Difference]: With dead ends: 447 [2021-11-06 10:15:10,169 INFO L226 Difference]: Without dead ends: 265 [2021-11-06 10:15:10,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:15:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-06 10:15:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-06 10:15:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3064516129032258) internal successors, (324), 264 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2021-11-06 10:15:10,176 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 57 [2021-11-06 10:15:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:10,176 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2021-11-06 10:15:10,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2021-11-06 10:15:10,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 10:15:10,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:10,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:10,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:15:10,179 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:10,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2087499103, now seen corresponding path program 1 times [2021-11-06 10:15:10,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:10,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426292520] [2021-11-06 10:15:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:10,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:11,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:11,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426292520] [2021-11-06 10:15:11,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426292520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:11,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:11,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:15:11,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597158546] [2021-11-06 10:15:11,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:15:11,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:15:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:15:11,576 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:19,811 INFO L93 Difference]: Finished difference Result 629 states and 758 transitions. [2021-11-06 10:15:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:15:19,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-06 10:15:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:19,814 INFO L225 Difference]: With dead ends: 629 [2021-11-06 10:15:19,814 INFO L226 Difference]: Without dead ends: 453 [2021-11-06 10:15:19,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:15:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-06 10:15:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 304. [2021-11-06 10:15:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 287 states have (on average 1.2996515679442509) internal successors, (373), 303 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 373 transitions. [2021-11-06 10:15:19,824 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 373 transitions. Word has length 59 [2021-11-06 10:15:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:19,825 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 373 transitions. [2021-11-06 10:15:19,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 373 transitions. [2021-11-06 10:15:19,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 10:15:19,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:19,826 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:19,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:15:19,827 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -165160809, now seen corresponding path program 1 times [2021-11-06 10:15:19,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:19,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231592220] [2021-11-06 10:15:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:19,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:20,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:20,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231592220] [2021-11-06 10:15:20,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231592220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:20,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:20,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:15:20,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110300769] [2021-11-06 10:15:20,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:15:20,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:20,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:15:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:15:20,864 INFO L87 Difference]: Start difference. First operand 304 states and 373 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:27,704 INFO L93 Difference]: Finished difference Result 644 states and 774 transitions. [2021-11-06 10:15:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:15:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-06 10:15:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:27,708 INFO L225 Difference]: With dead ends: 644 [2021-11-06 10:15:27,708 INFO L226 Difference]: Without dead ends: 461 [2021-11-06 10:15:27,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:15:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-06 10:15:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 373. [2021-11-06 10:15:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 356 states have (on average 1.3061797752808988) internal successors, (465), 372 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 465 transitions. [2021-11-06 10:15:27,721 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 465 transitions. Word has length 63 [2021-11-06 10:15:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:27,721 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 465 transitions. [2021-11-06 10:15:27,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 465 transitions. [2021-11-06 10:15:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 10:15:27,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:27,723 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:27,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:15:27,723 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash -51426837, now seen corresponding path program 1 times [2021-11-06 10:15:27,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:27,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74391767] [2021-11-06 10:15:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:27,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:28,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:28,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74391767] [2021-11-06 10:15:28,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74391767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:28,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:28,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:15:28,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812404216] [2021-11-06 10:15:28,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:15:28,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:15:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:15:28,096 INFO L87 Difference]: Start difference. First operand 373 states and 465 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:28,456 INFO L93 Difference]: Finished difference Result 552 states and 681 transitions. [2021-11-06 10:15:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:15:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-06 10:15:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:28,459 INFO L225 Difference]: With dead ends: 552 [2021-11-06 10:15:28,459 INFO L226 Difference]: Without dead ends: 373 [2021-11-06 10:15:28,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:15:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-06 10:15:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-06 10:15:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 356 states have (on average 1.297752808988764) internal successors, (462), 372 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 462 transitions. [2021-11-06 10:15:28,470 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 462 transitions. Word has length 63 [2021-11-06 10:15:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:28,470 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 462 transitions. [2021-11-06 10:15:28,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 462 transitions. [2021-11-06 10:15:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 10:15:28,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:28,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:28,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:15:28,471 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:28,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1088523855, now seen corresponding path program 1 times [2021-11-06 10:15:28,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:28,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843178270] [2021-11-06 10:15:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:28,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:29,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:29,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843178270] [2021-11-06 10:15:29,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843178270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:29,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:29,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:15:29,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653910198] [2021-11-06 10:15:29,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:15:29,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:29,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:15:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:15:29,295 INFO L87 Difference]: Start difference. First operand 373 states and 462 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:30,130 INFO L93 Difference]: Finished difference Result 804 states and 982 transitions. [2021-11-06 10:15:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:15:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-06 10:15:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:30,132 INFO L225 Difference]: With dead ends: 804 [2021-11-06 10:15:30,132 INFO L226 Difference]: Without dead ends: 506 [2021-11-06 10:15:30,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:15:30,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-06 10:15:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 373. [2021-11-06 10:15:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 356 states have (on average 1.2893258426966292) internal successors, (459), 372 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 459 transitions. [2021-11-06 10:15:30,145 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 459 transitions. Word has length 67 [2021-11-06 10:15:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:30,145 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 459 transitions. [2021-11-06 10:15:30,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 459 transitions. [2021-11-06 10:15:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 10:15:30,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:30,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:30,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:15:30,147 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:30,147 INFO L85 PathProgramCache]: Analyzing trace with hash -579601632, now seen corresponding path program 1 times [2021-11-06 10:15:30,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:30,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219262794] [2021-11-06 10:15:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:30,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:30,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:30,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219262794] [2021-11-06 10:15:30,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219262794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:30,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:30,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:15:30,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53785236] [2021-11-06 10:15:30,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:15:30,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:30,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:15:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:15:30,672 INFO L87 Difference]: Start difference. First operand 373 states and 459 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:31,316 INFO L93 Difference]: Finished difference Result 621 states and 744 transitions. [2021-11-06 10:15:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:15:31,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 10:15:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:31,319 INFO L225 Difference]: With dead ends: 621 [2021-11-06 10:15:31,319 INFO L226 Difference]: Without dead ends: 615 [2021-11-06 10:15:31,319 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:15:31,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-06 10:15:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 393. [2021-11-06 10:15:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 376 states have (on average 1.273936170212766) internal successors, (479), 392 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 479 transitions. [2021-11-06 10:15:31,332 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 479 transitions. Word has length 69 [2021-11-06 10:15:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:31,333 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 479 transitions. [2021-11-06 10:15:31,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 479 transitions. [2021-11-06 10:15:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 10:15:31,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:31,334 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:31,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:15:31,334 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:31,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2057535045, now seen corresponding path program 1 times [2021-11-06 10:15:31,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:31,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518101375] [2021-11-06 10:15:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:31,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:32,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:32,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518101375] [2021-11-06 10:15:32,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518101375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:32,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:32,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:15:32,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754700114] [2021-11-06 10:15:32,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:15:32,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:15:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:15:32,095 INFO L87 Difference]: Start difference. First operand 393 states and 479 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:37,477 INFO L93 Difference]: Finished difference Result 830 states and 997 transitions. [2021-11-06 10:15:37,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:15:37,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 10:15:37,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:37,480 INFO L225 Difference]: With dead ends: 830 [2021-11-06 10:15:37,481 INFO L226 Difference]: Without dead ends: 515 [2021-11-06 10:15:37,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:15:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-11-06 10:15:37,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 393. [2021-11-06 10:15:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 376 states have (on average 1.2553191489361701) internal successors, (472), 392 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2021-11-06 10:15:37,495 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 71 [2021-11-06 10:15:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:37,495 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2021-11-06 10:15:37,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:37,495 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2021-11-06 10:15:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 10:15:37,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:37,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:37,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:15:37,497 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:37,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1921333697, now seen corresponding path program 1 times [2021-11-06 10:15:37,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:37,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749935647] [2021-11-06 10:15:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:37,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:41,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:41,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749935647] [2021-11-06 10:15:41,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749935647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:41,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:41,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:15:41,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551545637] [2021-11-06 10:15:41,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:15:41,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:15:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:15:41,031 INFO L87 Difference]: Start difference. First operand 393 states and 472 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:44,768 INFO L93 Difference]: Finished difference Result 815 states and 987 transitions. [2021-11-06 10:15:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:15:44,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 10:15:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:44,770 INFO L225 Difference]: With dead ends: 815 [2021-11-06 10:15:44,770 INFO L226 Difference]: Without dead ends: 449 [2021-11-06 10:15:44,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:15:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-06 10:15:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 391. [2021-11-06 10:15:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 374 states have (on average 1.2540106951871657) internal successors, (469), 390 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 469 transitions. [2021-11-06 10:15:44,784 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 469 transitions. Word has length 71 [2021-11-06 10:15:44,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:44,785 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 469 transitions. [2021-11-06 10:15:44,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 469 transitions. [2021-11-06 10:15:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 10:15:44,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:44,786 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:44,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:15:44,787 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1814979209, now seen corresponding path program 1 times [2021-11-06 10:15:44,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:44,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559616927] [2021-11-06 10:15:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:44,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:45,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:45,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559616927] [2021-11-06 10:15:45,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559616927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:45,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:45,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:15:45,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443754472] [2021-11-06 10:15:45,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:15:45,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:45,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:15:45,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:15:45,483 INFO L87 Difference]: Start difference. First operand 391 states and 469 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:46,356 INFO L93 Difference]: Finished difference Result 927 states and 1098 transitions. [2021-11-06 10:15:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:15:46,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-06 10:15:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:46,359 INFO L225 Difference]: With dead ends: 927 [2021-11-06 10:15:46,359 INFO L226 Difference]: Without dead ends: 550 [2021-11-06 10:15:46,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:15:46,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-06 10:15:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 391. [2021-11-06 10:15:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 374 states have (on average 1.2459893048128343) internal successors, (466), 390 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 466 transitions. [2021-11-06 10:15:46,414 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 466 transitions. Word has length 75 [2021-11-06 10:15:46,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:46,415 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 466 transitions. [2021-11-06 10:15:46,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:46,415 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 466 transitions. [2021-11-06 10:15:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 10:15:46,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:46,416 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:46,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 10:15:46,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:46,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:46,417 INFO L85 PathProgramCache]: Analyzing trace with hash -679199566, now seen corresponding path program 1 times [2021-11-06 10:15:46,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:46,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71460349] [2021-11-06 10:15:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:46,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:47,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:47,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71460349] [2021-11-06 10:15:47,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71460349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:47,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:47,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:15:47,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495618739] [2021-11-06 10:15:47,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:15:47,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:47,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:15:47,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:15:47,019 INFO L87 Difference]: Start difference. First operand 391 states and 466 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:50,249 INFO L93 Difference]: Finished difference Result 1164 states and 1387 transitions. [2021-11-06 10:15:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:15:50,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 10:15:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:50,252 INFO L225 Difference]: With dead ends: 1164 [2021-11-06 10:15:50,252 INFO L226 Difference]: Without dead ends: 793 [2021-11-06 10:15:50,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:15:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2021-11-06 10:15:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 445. [2021-11-06 10:15:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 428 states have (on average 1.25) internal successors, (535), 444 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 535 transitions. [2021-11-06 10:15:50,273 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 535 transitions. Word has length 77 [2021-11-06 10:15:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:50,273 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 535 transitions. [2021-11-06 10:15:50,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 535 transitions. [2021-11-06 10:15:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 10:15:50,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:50,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:50,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 10:15:50,275 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash -118499788, now seen corresponding path program 1 times [2021-11-06 10:15:50,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:50,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467805540] [2021-11-06 10:15:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:50,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:50,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:50,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467805540] [2021-11-06 10:15:50,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467805540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:50,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:50,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:15:50,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634881016] [2021-11-06 10:15:50,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:15:50,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:50,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:15:50,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:15:50,470 INFO L87 Difference]: Start difference. First operand 445 states and 535 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:50,802 INFO L93 Difference]: Finished difference Result 909 states and 1089 transitions. [2021-11-06 10:15:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:15:50,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 10:15:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:50,804 INFO L225 Difference]: With dead ends: 909 [2021-11-06 10:15:50,805 INFO L226 Difference]: Without dead ends: 474 [2021-11-06 10:15:50,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:15:50,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-06 10:15:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 444. [2021-11-06 10:15:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 427 states have (on average 1.2295081967213115) internal successors, (525), 443 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 525 transitions. [2021-11-06 10:15:50,820 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 525 transitions. Word has length 77 [2021-11-06 10:15:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:50,820 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 525 transitions. [2021-11-06 10:15:50,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 525 transitions. [2021-11-06 10:15:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 10:15:50,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:50,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:50,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:15:50,822 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:50,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -733592464, now seen corresponding path program 1 times [2021-11-06 10:15:50,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:50,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938108444] [2021-11-06 10:15:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:50,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:15:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:15:53,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:15:53,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938108444] [2021-11-06 10:15:53,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938108444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:15:53,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:15:53,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:15:53,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851873626] [2021-11-06 10:15:53,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:15:53,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:15:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:15:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:15:53,661 INFO L87 Difference]: Start difference. First operand 444 states and 525 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:15:59,354 INFO L93 Difference]: Finished difference Result 995 states and 1177 transitions. [2021-11-06 10:15:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:15:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 10:15:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:15:59,357 INFO L225 Difference]: With dead ends: 995 [2021-11-06 10:15:59,357 INFO L226 Difference]: Without dead ends: 636 [2021-11-06 10:15:59,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:15:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-06 10:15:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 589. [2021-11-06 10:15:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 572 states have (on average 1.2342657342657342) internal successors, (706), 588 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 706 transitions. [2021-11-06 10:15:59,379 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 706 transitions. Word has length 77 [2021-11-06 10:15:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:15:59,379 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 706 transitions. [2021-11-06 10:15:59,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:15:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 706 transitions. [2021-11-06 10:15:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 10:15:59,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:15:59,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:15:59,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 10:15:59,381 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:15:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:15:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash -282222071, now seen corresponding path program 1 times [2021-11-06 10:15:59,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:15:59,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658257410] [2021-11-06 10:15:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:15:59,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:02,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:02,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658257410] [2021-11-06 10:16:02,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658257410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:02,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:02,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:16:02,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429988905] [2021-11-06 10:16:02,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:16:02,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:16:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:16:02,317 INFO L87 Difference]: Start difference. First operand 589 states and 706 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:13,578 INFO L93 Difference]: Finished difference Result 1260 states and 1519 transitions. [2021-11-06 10:16:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 10:16:13,578 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 10:16:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:13,581 INFO L225 Difference]: With dead ends: 1260 [2021-11-06 10:16:13,581 INFO L226 Difference]: Without dead ends: 780 [2021-11-06 10:16:13,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:16:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-11-06 10:16:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 622. [2021-11-06 10:16:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 605 states have (on average 1.2413223140495868) internal successors, (751), 621 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 751 transitions. [2021-11-06 10:16:13,610 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 751 transitions. Word has length 79 [2021-11-06 10:16:13,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:13,610 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 751 transitions. [2021-11-06 10:16:13,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 751 transitions. [2021-11-06 10:16:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:16:13,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:13,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:13,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 10:16:13,612 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:16:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1289398312, now seen corresponding path program 1 times [2021-11-06 10:16:13,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:13,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349805330] [2021-11-06 10:16:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:13,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:13,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:13,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349805330] [2021-11-06 10:16:13,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349805330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:13,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:13,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:16:13,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162050410] [2021-11-06 10:16:13,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:16:13,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:16:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:16:13,888 INFO L87 Difference]: Start difference. First operand 622 states and 751 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:14,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:14,211 INFO L93 Difference]: Finished difference Result 1309 states and 1559 transitions. [2021-11-06 10:16:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:16:14,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:16:14,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:14,217 INFO L225 Difference]: With dead ends: 1309 [2021-11-06 10:16:14,217 INFO L226 Difference]: Without dead ends: 704 [2021-11-06 10:16:14,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:16:14,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-06 10:16:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 608. [2021-11-06 10:16:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 591 states have (on average 1.2148900169204737) internal successors, (718), 607 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 718 transitions. [2021-11-06 10:16:14,246 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 718 transitions. Word has length 85 [2021-11-06 10:16:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:14,247 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 718 transitions. [2021-11-06 10:16:14,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 718 transitions. [2021-11-06 10:16:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:16:14,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:14,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:14,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 10:16:14,249 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:16:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1160201818, now seen corresponding path program 1 times [2021-11-06 10:16:14,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:14,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076558013] [2021-11-06 10:16:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:14,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:18,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:18,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076558013] [2021-11-06 10:16:18,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076558013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:18,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:18,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:16:18,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029883375] [2021-11-06 10:16:18,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:16:18,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:16:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:16:18,191 INFO L87 Difference]: Start difference. First operand 608 states and 718 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:36,459 INFO L93 Difference]: Finished difference Result 1107 states and 1294 transitions. [2021-11-06 10:16:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 10:16:36,459 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:16:36,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:36,461 INFO L225 Difference]: With dead ends: 1107 [2021-11-06 10:16:36,462 INFO L226 Difference]: Without dead ends: 740 [2021-11-06 10:16:36,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2021-11-06 10:16:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-11-06 10:16:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 556. [2021-11-06 10:16:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 539 states have (on average 1.2040816326530612) internal successors, (649), 555 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 649 transitions. [2021-11-06 10:16:36,485 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 649 transitions. Word has length 85 [2021-11-06 10:16:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:36,485 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 649 transitions. [2021-11-06 10:16:36,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 649 transitions. [2021-11-06 10:16:36,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:16:36,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:36,487 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:36,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 10:16:36,487 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:16:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash -272808364, now seen corresponding path program 1 times [2021-11-06 10:16:36,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:36,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479646757] [2021-11-06 10:16:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:36,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:37,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:37,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479646757] [2021-11-06 10:16:37,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479646757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:37,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:37,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:16:37,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502351865] [2021-11-06 10:16:37,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:16:37,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:16:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:16:37,451 INFO L87 Difference]: Start difference. First operand 556 states and 649 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:45,717 INFO L93 Difference]: Finished difference Result 1245 states and 1460 transitions. [2021-11-06 10:16:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:16:45,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:16:45,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:45,720 INFO L225 Difference]: With dead ends: 1245 [2021-11-06 10:16:45,720 INFO L226 Difference]: Without dead ends: 1002 [2021-11-06 10:16:45,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:16:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-11-06 10:16:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 661. [2021-11-06 10:16:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 644 states have (on average 1.187888198757764) internal successors, (765), 660 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 765 transitions. [2021-11-06 10:16:45,746 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 765 transitions. Word has length 85 [2021-11-06 10:16:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:45,746 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 765 transitions. [2021-11-06 10:16:45,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 765 transitions. [2021-11-06 10:16:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:16:45,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:45,747 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:45,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 10:16:45,748 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:16:45,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 407250006, now seen corresponding path program 1 times [2021-11-06 10:16:45,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:45,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660517532] [2021-11-06 10:16:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:45,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:46,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:46,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660517532] [2021-11-06 10:16:46,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660517532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:46,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:46,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:16:46,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918595801] [2021-11-06 10:16:46,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:16:46,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:46,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:16:46,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:16:46,210 INFO L87 Difference]: Start difference. First operand 661 states and 765 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:16:51,353 INFO L93 Difference]: Finished difference Result 1042 states and 1212 transitions. [2021-11-06 10:16:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:16:51,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:16:51,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:16:51,356 INFO L225 Difference]: With dead ends: 1042 [2021-11-06 10:16:51,356 INFO L226 Difference]: Without dead ends: 742 [2021-11-06 10:16:51,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:16:51,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-11-06 10:16:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 649. [2021-11-06 10:16:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 632 states have (on average 1.1724683544303798) internal successors, (741), 648 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:51,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 741 transitions. [2021-11-06 10:16:51,384 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 741 transitions. Word has length 85 [2021-11-06 10:16:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:16:51,384 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 741 transitions. [2021-11-06 10:16:51,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:16:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 741 transitions. [2021-11-06 10:16:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:16:51,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:16:51,386 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:16:51,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 10:16:51,386 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:16:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:16:51,387 INFO L85 PathProgramCache]: Analyzing trace with hash -345194922, now seen corresponding path program 1 times [2021-11-06 10:16:51,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:16:51,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678099266] [2021-11-06 10:16:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:16:51,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:16:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:16:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:16:52,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:16:52,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678099266] [2021-11-06 10:16:52,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678099266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:16:52,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:16:52,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:16:52,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975722520] [2021-11-06 10:16:52,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:16:52,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:16:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:16:52,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:16:52,530 INFO L87 Difference]: Start difference. First operand 649 states and 741 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:04,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:04,379 INFO L93 Difference]: Finished difference Result 1872 states and 2146 transitions. [2021-11-06 10:17:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:17:04,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:17:04,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:04,384 INFO L225 Difference]: With dead ends: 1872 [2021-11-06 10:17:04,384 INFO L226 Difference]: Without dead ends: 1425 [2021-11-06 10:17:04,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-11-06 10:17:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-11-06 10:17:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 884. [2021-11-06 10:17:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 867 states have (on average 1.1787773933102652) internal successors, (1022), 883 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1022 transitions. [2021-11-06 10:17:04,441 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1022 transitions. Word has length 85 [2021-11-06 10:17:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:04,441 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 1022 transitions. [2021-11-06 10:17:04,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1022 transitions. [2021-11-06 10:17:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 10:17:04,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:04,443 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:17:04,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 10:17:04,443 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:17:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:04,444 INFO L85 PathProgramCache]: Analyzing trace with hash -399587820, now seen corresponding path program 1 times [2021-11-06 10:17:04,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:04,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883452832] [2021-11-06 10:17:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:04,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:17:09,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:09,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883452832] [2021-11-06 10:17:09,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883452832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:09,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:09,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:17:09,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070732881] [2021-11-06 10:17:09,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:17:09,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:09,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:17:09,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:17:09,622 INFO L87 Difference]: Start difference. First operand 884 states and 1022 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:15,988 INFO L93 Difference]: Finished difference Result 1288 states and 1493 transitions. [2021-11-06 10:17:15,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:17:15,989 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 10:17:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:15,991 INFO L225 Difference]: With dead ends: 1288 [2021-11-06 10:17:15,991 INFO L226 Difference]: Without dead ends: 1051 [2021-11-06 10:17:15,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:17:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-11-06 10:17:16,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 894. [2021-11-06 10:17:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 877 states have (on average 1.1733181299885975) internal successors, (1029), 893 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1029 transitions. [2021-11-06 10:17:16,026 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1029 transitions. Word has length 85 [2021-11-06 10:17:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:16,026 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1029 transitions. [2021-11-06 10:17:16,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1029 transitions. [2021-11-06 10:17:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 10:17:16,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:16,028 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:17:16,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 10:17:16,028 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:17:16,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:16,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1499307213, now seen corresponding path program 1 times [2021-11-06 10:17:16,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:16,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723927326] [2021-11-06 10:17:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:16,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:17:18,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:18,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723927326] [2021-11-06 10:17:18,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723927326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:18,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:18,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:17:18,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744708225] [2021-11-06 10:17:18,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:17:18,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:17:18,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:17:18,924 INFO L87 Difference]: Start difference. First operand 894 states and 1029 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:27,397 INFO L93 Difference]: Finished difference Result 977 states and 1107 transitions. [2021-11-06 10:17:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 10:17:27,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-06 10:17:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:27,400 INFO L225 Difference]: With dead ends: 977 [2021-11-06 10:17:27,400 INFO L226 Difference]: Without dead ends: 975 [2021-11-06 10:17:27,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:17:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-11-06 10:17:27,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 892. [2021-11-06 10:17:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 876 states have (on average 1.1723744292237444) internal successors, (1027), 891 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1027 transitions. [2021-11-06 10:17:27,434 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1027 transitions. Word has length 86 [2021-11-06 10:17:27,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:27,435 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1027 transitions. [2021-11-06 10:17:27,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1027 transitions. [2021-11-06 10:17:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:17:27,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:27,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:17:27,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 10:17:27,437 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:17:27,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash 941267087, now seen corresponding path program 1 times [2021-11-06 10:17:27,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:27,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486592340] [2021-11-06 10:17:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:27,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:17:27,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:27,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486592340] [2021-11-06 10:17:27,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486592340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:27,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:27,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:17:27,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354902773] [2021-11-06 10:17:27,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:17:27,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:17:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:17:27,982 INFO L87 Difference]: Start difference. First operand 892 states and 1027 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:29,165 INFO L93 Difference]: Finished difference Result 1288 states and 1507 transitions. [2021-11-06 10:17:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:17:29,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:17:29,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:29,169 INFO L225 Difference]: With dead ends: 1288 [2021-11-06 10:17:29,169 INFO L226 Difference]: Without dead ends: 1282 [2021-11-06 10:17:29,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:17:29,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-11-06 10:17:29,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 956. [2021-11-06 10:17:29,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 940 states have (on average 1.1606382978723404) internal successors, (1091), 955 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1091 transitions. [2021-11-06 10:17:29,211 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1091 transitions. Word has length 87 [2021-11-06 10:17:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:29,211 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1091 transitions. [2021-11-06 10:17:29,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1091 transitions. [2021-11-06 10:17:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:17:29,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:29,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:17:29,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 10:17:29,213 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:17:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:29,214 INFO L85 PathProgramCache]: Analyzing trace with hash 131920461, now seen corresponding path program 1 times [2021-11-06 10:17:29,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:29,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453254448] [2021-11-06 10:17:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:29,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:17:29,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:29,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453254448] [2021-11-06 10:17:29,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453254448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:29,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:29,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:17:29,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347945997] [2021-11-06 10:17:29,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:17:29,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:29,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:17:29,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:17:29,993 INFO L87 Difference]: Start difference. First operand 956 states and 1091 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:17:40,808 INFO L93 Difference]: Finished difference Result 1516 states and 1738 transitions. [2021-11-06 10:17:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:17:40,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:17:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:17:40,811 INFO L225 Difference]: With dead ends: 1516 [2021-11-06 10:17:40,812 INFO L226 Difference]: Without dead ends: 1260 [2021-11-06 10:17:40,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:17:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-11-06 10:17:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 932. [2021-11-06 10:17:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 916 states have (on average 1.1561135371179039) internal successors, (1059), 931 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1059 transitions. [2021-11-06 10:17:40,850 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1059 transitions. Word has length 87 [2021-11-06 10:17:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:17:40,850 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1059 transitions. [2021-11-06 10:17:40,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:17:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1059 transitions. [2021-11-06 10:17:40,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:17:40,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:17:40,852 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:17:40,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 10:17:40,852 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:17:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:17:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1444052467, now seen corresponding path program 1 times [2021-11-06 10:17:40,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:17:40,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806999895] [2021-11-06 10:17:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:17:40,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:17:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:17:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:17:45,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:17:45,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806999895] [2021-11-06 10:17:45,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806999895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:17:45,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:17:45,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-06 10:17:45,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454962602] [2021-11-06 10:17:45,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-06 10:17:45,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:17:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-06 10:17:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:17:45,227 INFO L87 Difference]: Start difference. First operand 932 states and 1059 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:11,609 INFO L93 Difference]: Finished difference Result 1209 states and 1356 transitions. [2021-11-06 10:18:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-06 10:18:11,610 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:18:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:11,612 INFO L225 Difference]: With dead ends: 1209 [2021-11-06 10:18:11,612 INFO L226 Difference]: Without dead ends: 1201 [2021-11-06 10:18:11,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=843, Invalid=2939, Unknown=0, NotChecked=0, Total=3782 [2021-11-06 10:18:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2021-11-06 10:18:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 915. [2021-11-06 10:18:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 901 states have (on average 1.1564927857935627) internal successors, (1042), 914 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1042 transitions. [2021-11-06 10:18:11,652 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1042 transitions. Word has length 87 [2021-11-06 10:18:11,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:11,652 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1042 transitions. [2021-11-06 10:18:11,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1042 transitions. [2021-11-06 10:18:11,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 10:18:11,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:11,654 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:18:11,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 10:18:11,654 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:18:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash -404556664, now seen corresponding path program 1 times [2021-11-06 10:18:11,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:11,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123375990] [2021-11-06 10:18:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:11,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:18:12,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:12,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123375990] [2021-11-06 10:18:12,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123375990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:12,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:12,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:18:12,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893494006] [2021-11-06 10:18:12,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:18:12,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:18:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:18:12,023 INFO L87 Difference]: Start difference. First operand 915 states and 1042 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:12,568 INFO L93 Difference]: Finished difference Result 1241 states and 1412 transitions. [2021-11-06 10:18:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:18:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 10:18:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:12,573 INFO L225 Difference]: With dead ends: 1241 [2021-11-06 10:18:12,573 INFO L226 Difference]: Without dead ends: 1237 [2021-11-06 10:18:12,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:18:12,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-11-06 10:18:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 939. [2021-11-06 10:18:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 925 states have (on average 1.1524324324324324) internal successors, (1066), 938 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1066 transitions. [2021-11-06 10:18:12,617 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1066 transitions. Word has length 94 [2021-11-06 10:18:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:12,617 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1066 transitions. [2021-11-06 10:18:12,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1066 transitions. [2021-11-06 10:18:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:18:12,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:12,619 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:18:12,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-06 10:18:12,619 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:18:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1357559296, now seen corresponding path program 1 times [2021-11-06 10:18:12,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:12,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593942454] [2021-11-06 10:18:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:12,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:18:13,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:13,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593942454] [2021-11-06 10:18:13,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593942454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:13,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:13,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:18:13,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55140623] [2021-11-06 10:18:13,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:18:13,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:18:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:18:13,215 INFO L87 Difference]: Start difference. First operand 939 states and 1066 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:21,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:21,271 INFO L93 Difference]: Finished difference Result 1373 states and 1546 transitions. [2021-11-06 10:18:21,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:18:21,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:18:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:21,274 INFO L225 Difference]: With dead ends: 1373 [2021-11-06 10:18:21,274 INFO L226 Difference]: Without dead ends: 998 [2021-11-06 10:18:21,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:18:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-11-06 10:18:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 760. [2021-11-06 10:18:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 746 states have (on average 1.148793565683646) internal successors, (857), 759 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 857 transitions. [2021-11-06 10:18:21,308 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 857 transitions. Word has length 98 [2021-11-06 10:18:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:21,309 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 857 transitions. [2021-11-06 10:18:21,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 857 transitions. [2021-11-06 10:18:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:18:21,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:21,310 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:18:21,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 10:18:21,310 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:18:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1528610440, now seen corresponding path program 1 times [2021-11-06 10:18:21,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:21,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473002765] [2021-11-06 10:18:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:21,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:18:21,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:21,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473002765] [2021-11-06 10:18:21,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473002765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:21,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:21,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:18:21,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710919091] [2021-11-06 10:18:21,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:18:21,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:18:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:18:21,528 INFO L87 Difference]: Start difference. First operand 760 states and 857 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:21,627 INFO L93 Difference]: Finished difference Result 1030 states and 1158 transitions. [2021-11-06 10:18:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:18:21,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:18:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:21,631 INFO L225 Difference]: With dead ends: 1030 [2021-11-06 10:18:21,631 INFO L226 Difference]: Without dead ends: 804 [2021-11-06 10:18:21,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:18:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-11-06 10:18:21,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 724. [2021-11-06 10:18:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 710 states have (on average 1.128169014084507) internal successors, (801), 723 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 801 transitions. [2021-11-06 10:18:21,665 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 801 transitions. Word has length 98 [2021-11-06 10:18:21,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:21,665 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 801 transitions. [2021-11-06 10:18:21,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 801 transitions. [2021-11-06 10:18:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:18:21,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:21,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:18:21,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 10:18:21,667 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:18:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:21,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1528621363, now seen corresponding path program 1 times [2021-11-06 10:18:21,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:21,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336494309] [2021-11-06 10:18:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:21,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:18:24,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:24,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336494309] [2021-11-06 10:18:24,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336494309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:24,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:24,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:18:24,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13779048] [2021-11-06 10:18:24,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:18:24,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:18:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:18:24,757 INFO L87 Difference]: Start difference. First operand 724 states and 801 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:42,971 INFO L93 Difference]: Finished difference Result 1141 states and 1232 transitions. [2021-11-06 10:18:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-06 10:18:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:18:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:42,974 INFO L225 Difference]: With dead ends: 1141 [2021-11-06 10:18:42,974 INFO L226 Difference]: Without dead ends: 1137 [2021-11-06 10:18:42,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2021-11-06 10:18:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-06 10:18:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 832. [2021-11-06 10:18:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 818 states have (on average 1.1222493887530562) internal successors, (918), 831 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 918 transitions. [2021-11-06 10:18:43,006 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 918 transitions. Word has length 98 [2021-11-06 10:18:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:43,006 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 918 transitions. [2021-11-06 10:18:43,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 918 transitions. [2021-11-06 10:18:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:18:43,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:43,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:18:43,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 10:18:43,008 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:18:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1501555761, now seen corresponding path program 1 times [2021-11-06 10:18:43,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:43,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237137374] [2021-11-06 10:18:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:43,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:18:44,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:44,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237137374] [2021-11-06 10:18:44,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237137374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:44,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:44,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:18:44,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177205284] [2021-11-06 10:18:44,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:18:44,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:44,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:18:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:18:44,235 INFO L87 Difference]: Start difference. First operand 832 states and 918 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:55,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:18:55,896 INFO L93 Difference]: Finished difference Result 1291 states and 1412 transitions. [2021-11-06 10:18:55,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:18:55,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:18:55,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:18:55,899 INFO L225 Difference]: With dead ends: 1291 [2021-11-06 10:18:55,899 INFO L226 Difference]: Without dead ends: 876 [2021-11-06 10:18:55,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-06 10:18:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-06 10:18:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 724. [2021-11-06 10:18:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 710 states have (on average 1.119718309859155) internal successors, (795), 723 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 795 transitions. [2021-11-06 10:18:55,927 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 795 transitions. Word has length 98 [2021-11-06 10:18:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:18:55,927 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 795 transitions. [2021-11-06 10:18:55,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:18:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 795 transitions. [2021-11-06 10:18:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:18:55,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:18:55,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:18:55,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 10:18:55,929 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:18:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:18:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash 426716941, now seen corresponding path program 1 times [2021-11-06 10:18:55,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:18:55,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499541151] [2021-11-06 10:18:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:18:55,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:18:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:18:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:18:56,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:18:56,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499541151] [2021-11-06 10:18:56,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499541151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:18:56,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:18:56,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:18:56,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809538708] [2021-11-06 10:18:56,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:18:56,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:18:56,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:18:56,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:18:56,968 INFO L87 Difference]: Start difference. First operand 724 states and 795 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:05,745 INFO L93 Difference]: Finished difference Result 1115 states and 1216 transitions. [2021-11-06 10:19:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:19:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:19:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:05,749 INFO L225 Difference]: With dead ends: 1115 [2021-11-06 10:19:05,749 INFO L226 Difference]: Without dead ends: 935 [2021-11-06 10:19:05,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:19:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-06 10:19:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 724. [2021-11-06 10:19:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 710 states have (on average 1.115492957746479) internal successors, (792), 723 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 792 transitions. [2021-11-06 10:19:05,779 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 792 transitions. Word has length 98 [2021-11-06 10:19:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:05,779 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 792 transitions. [2021-11-06 10:19:05,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 792 transitions. [2021-11-06 10:19:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 10:19:05,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:05,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:19:05,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 10:19:05,781 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:19:05,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1262226801, now seen corresponding path program 1 times [2021-11-06 10:19:05,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:05,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203739824] [2021-11-06 10:19:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:05,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:19:09,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:09,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203739824] [2021-11-06 10:19:09,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203739824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:09,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:09,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:19:09,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064907860] [2021-11-06 10:19:09,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:19:09,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:09,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:19:09,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:19:09,354 INFO L87 Difference]: Start difference. First operand 724 states and 792 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:22,082 INFO L93 Difference]: Finished difference Result 829 states and 896 transitions. [2021-11-06 10:19:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 10:19:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-06 10:19:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:22,085 INFO L225 Difference]: With dead ends: 829 [2021-11-06 10:19:22,085 INFO L226 Difference]: Without dead ends: 825 [2021-11-06 10:19:22,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:19:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-11-06 10:19:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 722. [2021-11-06 10:19:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 709 states have (on average 1.1128349788434415) internal successors, (789), 721 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 789 transitions. [2021-11-06 10:19:22,118 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 789 transitions. Word has length 98 [2021-11-06 10:19:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:22,118 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 789 transitions. [2021-11-06 10:19:22,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 789 transitions. [2021-11-06 10:19:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 10:19:22,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:22,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:19:22,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-06 10:19:22,120 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:19:22,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2102697280, now seen corresponding path program 1 times [2021-11-06 10:19:22,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:22,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118070512] [2021-11-06 10:19:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:22,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:19:25,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:25,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118070512] [2021-11-06 10:19:25,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118070512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:25,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:25,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 10:19:25,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858493122] [2021-11-06 10:19:25,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 10:19:25,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:25,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 10:19:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:19:25,467 INFO L87 Difference]: Start difference. First operand 722 states and 789 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:36,417 INFO L93 Difference]: Finished difference Result 1373 states and 1474 transitions. [2021-11-06 10:19:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 10:19:36,418 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-06 10:19:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:36,420 INFO L225 Difference]: With dead ends: 1373 [2021-11-06 10:19:36,420 INFO L226 Difference]: Without dead ends: 1229 [2021-11-06 10:19:36,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=327, Invalid=863, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 10:19:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-11-06 10:19:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 733. [2021-11-06 10:19:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 720 states have (on average 1.1125) internal successors, (801), 732 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 801 transitions. [2021-11-06 10:19:36,462 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 801 transitions. Word has length 111 [2021-11-06 10:19:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:36,462 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 801 transitions. [2021-11-06 10:19:36,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 801 transitions. [2021-11-06 10:19:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 10:19:36,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:36,464 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:19:36,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 10:19:36,464 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:19:36,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:36,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1512211646, now seen corresponding path program 1 times [2021-11-06 10:19:36,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:36,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204740562] [2021-11-06 10:19:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:36,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:19:36,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:36,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204740562] [2021-11-06 10:19:36,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204740562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:36,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:36,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:19:36,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155836201] [2021-11-06 10:19:36,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:19:36,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:19:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:19:36,826 INFO L87 Difference]: Start difference. First operand 733 states and 801 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:39,476 INFO L93 Difference]: Finished difference Result 1231 states and 1352 transitions. [2021-11-06 10:19:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:19:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-06 10:19:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:39,478 INFO L225 Difference]: With dead ends: 1231 [2021-11-06 10:19:39,478 INFO L226 Difference]: Without dead ends: 725 [2021-11-06 10:19:39,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:19:39,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-06 10:19:39,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 725. [2021-11-06 10:19:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 712 states have (on average 1.0912921348314606) internal successors, (777), 724 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 777 transitions. [2021-11-06 10:19:39,505 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 777 transitions. Word has length 111 [2021-11-06 10:19:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:39,505 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 777 transitions. [2021-11-06 10:19:39,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 777 transitions. [2021-11-06 10:19:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 10:19:39,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:39,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:19:39,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 10:19:39,507 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:19:39,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1929761287, now seen corresponding path program 1 times [2021-11-06 10:19:39,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:39,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371241364] [2021-11-06 10:19:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:39,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:19:40,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:40,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371241364] [2021-11-06 10:19:40,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371241364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:40,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:40,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:19:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641255018] [2021-11-06 10:19:40,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:19:40,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:19:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:19:40,263 INFO L87 Difference]: Start difference. First operand 725 states and 777 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:49,162 INFO L93 Difference]: Finished difference Result 908 states and 977 transitions. [2021-11-06 10:19:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 10:19:49,163 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-06 10:19:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:49,165 INFO L225 Difference]: With dead ends: 908 [2021-11-06 10:19:49,165 INFO L226 Difference]: Without dead ends: 902 [2021-11-06 10:19:49,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:19:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-11-06 10:19:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 726. [2021-11-06 10:19:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 714 states have (on average 1.0854341736694677) internal successors, (775), 725 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 775 transitions. [2021-11-06 10:19:49,198 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 775 transitions. Word has length 113 [2021-11-06 10:19:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:49,199 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 775 transitions. [2021-11-06 10:19:49,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 775 transitions. [2021-11-06 10:19:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 10:19:49,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:49,200 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:19:49,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-06 10:19:49,201 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:19:49,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:49,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1405455785, now seen corresponding path program 1 times [2021-11-06 10:19:49,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:49,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023801264] [2021-11-06 10:19:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:49,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:19:49,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:49,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023801264] [2021-11-06 10:19:49,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023801264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:49,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:49,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:19:49,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067744467] [2021-11-06 10:19:49,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:19:49,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:19:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:19:49,819 INFO L87 Difference]: Start difference. First operand 726 states and 775 transitions. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:58,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:19:58,079 INFO L93 Difference]: Finished difference Result 869 states and 919 transitions. [2021-11-06 10:19:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:19:58,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-06 10:19:58,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:19:58,082 INFO L225 Difference]: With dead ends: 869 [2021-11-06 10:19:58,082 INFO L226 Difference]: Without dead ends: 817 [2021-11-06 10:19:58,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:19:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-06 10:19:58,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 726. [2021-11-06 10:19:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 714 states have (on average 1.0826330532212884) internal successors, (773), 725 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 773 transitions. [2021-11-06 10:19:58,115 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 773 transitions. Word has length 114 [2021-11-06 10:19:58,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:19:58,115 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 773 transitions. [2021-11-06 10:19:58,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:19:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 773 transitions. [2021-11-06 10:19:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 10:19:58,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:19:58,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:19:58,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-06 10:19:58,117 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:19:58,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:19:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1130881669, now seen corresponding path program 1 times [2021-11-06 10:19:58,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:19:58,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462572136] [2021-11-06 10:19:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:19:58,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:19:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:19:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:19:58,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:19:58,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462572136] [2021-11-06 10:19:58,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462572136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:19:58,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:19:58,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:19:58,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942346650] [2021-11-06 10:19:58,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:19:58,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:19:58,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:19:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:19:58,909 INFO L87 Difference]: Start difference. First operand 726 states and 773 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:20:03,844 INFO L93 Difference]: Finished difference Result 789 states and 835 transitions. [2021-11-06 10:20:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:20:03,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-06 10:20:03,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:20:03,846 INFO L225 Difference]: With dead ends: 789 [2021-11-06 10:20:03,846 INFO L226 Difference]: Without dead ends: 667 [2021-11-06 10:20:03,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:20:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-06 10:20:03,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2021-11-06 10:20:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 655 states have (on average 1.0748091603053436) internal successors, (704), 666 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 704 transitions. [2021-11-06 10:20:03,873 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 704 transitions. Word has length 114 [2021-11-06 10:20:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:20:03,873 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 704 transitions. [2021-11-06 10:20:03,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 704 transitions. [2021-11-06 10:20:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 10:20:03,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:20:03,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:20:03,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-06 10:20:03,875 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:20:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:20:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 357213547, now seen corresponding path program 1 times [2021-11-06 10:20:03,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:20:03,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276054856] [2021-11-06 10:20:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:20:03,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:20:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:20:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:20:11,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:20:11,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276054856] [2021-11-06 10:20:11,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276054856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:20:11,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:20:11,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-06 10:20:11,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563589316] [2021-11-06 10:20:11,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-06 10:20:11,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:20:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-06 10:20:11,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-11-06 10:20:11,726 INFO L87 Difference]: Start difference. First operand 667 states and 704 transitions. Second operand has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:42,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:20:42,500 INFO L93 Difference]: Finished difference Result 828 states and 865 transitions. [2021-11-06 10:20:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-06 10:20:42,500 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-06 10:20:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:20:42,502 INFO L225 Difference]: With dead ends: 828 [2021-11-06 10:20:42,502 INFO L226 Difference]: Without dead ends: 776 [2021-11-06 10:20:42,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=826, Invalid=2480, Unknown=0, NotChecked=0, Total=3306 [2021-11-06 10:20:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-06 10:20:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 657. [2021-11-06 10:20:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 645 states have (on average 1.069767441860465) internal successors, (690), 656 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 690 transitions. [2021-11-06 10:20:42,530 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 690 transitions. Word has length 114 [2021-11-06 10:20:42,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:20:42,530 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 690 transitions. [2021-11-06 10:20:42,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:20:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 690 transitions. [2021-11-06 10:20:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 10:20:42,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:20:42,531 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:20:42,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-06 10:20:42,531 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 10:20:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:20:42,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2079309597, now seen corresponding path program 1 times [2021-11-06 10:20:42,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:20:42,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462352467] [2021-11-06 10:20:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:20:42,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:20:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:20:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:20:52,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:20:52,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462352467] [2021-11-06 10:20:52,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462352467] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:20:52,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020750092] [2021-11-06 10:20:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:20:52,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:20:52,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:20:52,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:20:52,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 10:20:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:20:54,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-06 10:20:54,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:20:54,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 10:20:54,714 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-06 10:20:54,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-06 10:20:54,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-06 10:20:57,111 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-11-06 10:20:57,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 62 [2021-11-06 10:20:57,219 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-06 10:20:57,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 47 [2021-11-06 10:21:02,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:21:02,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 60 [2021-11-06 10:21:04,389 INFO L354 Elim1Store]: treesize reduction 462, result has 22.6 percent of original size [2021-11-06 10:21:04,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 142 treesize of output 233 [2021-11-06 10:21:20,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:21:21,316 INFO L354 Elim1Store]: treesize reduction 131, result has 35.1 percent of original size [2021-11-06 10:21:21,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 186 treesize of output 201 [2021-11-06 10:25:27,035 INFO L354 Elim1Store]: treesize reduction 145, result has 32.2 percent of original size [2021-11-06 10:25:27,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 296 treesize of output 291 Killed by 15